| Author(s): |
Archita Hati; Craig W. Nelson; Corey A. Barnes; Danielle G. Lirette; Jason A. DeSalvo; David A. Howe; |
| Title: |
Ultra-low noise regenerative frequency divider |
| Published: |
November 11, 2012 |
| Abstract: |
We designed ultra-low noise regenerative divider-by-2 circuits that operate at input frequencies of 20 MHz and 10 MHz. We achieved residual output-referred single-sideband phase noise below -162 dBc/Hz at 10 Hz offset for a single divider at these frequencies. In order to measure such a low noise we also built a cross-spectrum measurement system that has a noise floor of -175 dBc/Hz at 10 Hz offset from a 5 MHz and 10 MHz carrier. The low noise of the divider and the measurement system are achieved by use of custom-built mixers/phase detectors that use 2N2222A bipolar junction transistors (BJTs) in a conventional double balanced diode ring. |
| Citation: |
IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control |
| Volume: |
59 |
| Issue: |
11 |
| Pages: |
pp. 2596 - 2598 |
| Keywords: |
Frequency synthesis;Mixer;Phase noise;Regenerative divider |
| Research Areas: |
Physics |
